D a v id b r u



DAVID BRUCE, OF BRGOKLYN, NEW YORK.

Leners Patent No. 80,448, and Juzg 28, 1868.

IMPROVEMENT IN TYPEMACI'IINES.

o'ilie tlgehiile refont tu iii tlgrse tettets ateiit mit mating intl at tige same.

moby- TO ALL WHOM IT MAY CONCERN:

Be it known that I, DAVID BRUCE, of Brooklyn, Kings county, and State of New York, have invented certain new and useful improvements in mechanism for breaking oli` the jet or stem of metal adhering to the 4ends of printers types when i'irst cast; and I do hereby declare that the following is a full description of the same.

The nature of my invention consists-- First, in combining, witha right-angled lever attached to the stock or .frame of the'apparatus by a centrepin, an adjustable block or plug, to fill the discharging-port inthe inclined gutter, to make a continuous gutter for the descent of the type down it, previous to the breaking the jet thereof.

Second, in combning,with Athe right-angled lever aforesaid, an adjusting-plate, for supporting and'tripping the'hammer for breaking o' the jet of metal attached to the end of the type.

y Third, in combining, with the aforesaid adjusting-plate, a Ulshaped cam or guide-ways for operating a type holder weight during the operation of breaking oif the jet of metal, and releasing the type from the gutter,

' after its jet has been broken off, that it may be discharged from the apparatus.

Fourth, in combining, with the aforesaid adjustable plate, 'and stock or frame of the apparatus, an adjustable compound spring, for-closing the end of the gutter, to prevent the type from escaping therefrom tillits jet is broken off, and at the same time prevent the type from rebounding in the gutter, by absorbing the force it acquired in its descent therein. I

Fifth, in combining, with the stock or'franie of the apparatus, a type-holder weight, for holding the type firmly in the gutter while the stem or jet attached to the end of the type is being broken off.

Sixth, in combining, with the stock or frame ofthe apparatus and the right-angled lever, a reacting springhammer, for breaking off the jet or stem of metal adhering to the end of the type. f

But to describe iny invention more particularly, I will refer to the accompanying drawings, forming a part/f n n l l lof this specification, the saine letters of reference, wherever they occur, referring to like parts. fr

Figure 1 is a side'vicw of the apparatus.

Figure 2 is a plan view of the apparatus. i j

Figure 3 is a front end view of the apparatus.

Figure 4 is a longitudinal cut-section of the apparatus through the line z m, fig.

Figure 5 is a longitudinal cutsection of the apparaius through the line x au, iig. appears when discharging the type therefrom. l

Letter A. is the stock or' frame of the apparatus, and by means-oil which itis attached tpm type-casting 2, showing the-same as it machine.

In the upper surface of the stoel: is forme-fl a gutter, B, having adownward inclination of about thirty degrees, more or less, as may be deemed necessary, to cause the type to descend freely down it.

About the length of an ordinary printers type from the lower end of the gutter, is formed a square hole,

C, through which, when the plug D, attached to a right-angled lever, E, working on a centre-pin, F, is drawn back therefrom, the stein of the type is discharge-1. It will be obvious, therefore, that When4 the plug is in the discharging-port C, it makes a continuous gutter for the descent of the type, but when withdrawn therefrom, a. broke/ii gutter, and thus accomplishes the object of an instantaneous discharge of thc stem from the apparatus, when broken off from the end of the type, while the type is discharged from the end of the gutter.`

For the purpose of keeping the plug D in the gutter, a reacting spring, G, is attached to the stock A, in such a position as to act against the pendent leg of the right-angled lever E, and thus keep the gutter continuous vat all times, except when opened, bye suitable cam-motion, to discharge the stem of metal therefrom.

Letter ll. is a sliding adjusting-plate, secured to the face of tliestocl: A by means of set-screws I, working in oblong slots J, through the said plate, and is vibrated by means of a pin, K, in theface of the pendent leg of the right-angled lever, working in an ohlique-grooved plate, L, or guide-ways, attached to the lower edge of the movable plate. The object of this vbratory plate is', first, to hold up or support a spring-hammer till the type is properlyin place in the gutter, and then trip the hammer, by the withdrawal of the tapis M, secured tothe upper edge of the said plate, from the end of the hammer-spring; and second, for operating a movablejaw,

1N, secured `to the upper surface of the stock A, by centre-pins P, by means of a bifureated or iJ-shaped cam,

Q, attached to the upper edge of the said sliding plate, and acting on a tapis, P., on the end of the movable jaw. The object of this movable jaw is to hold the type steadily in the gutter while the stem is being broken o', and is graduated, in its downward and upward motions, by the bifurcated cam, for the purpose of guarding against any damage being done to the type, as would be likely to occ'ur if the jaw were let down suddenly upon it.

` Letter S is a compoundy spring, secured to the end ofthe socket A by a centrepin, V, and having an oblong W transverse slot, U, through them, so asnto admit ot' a vibratory motion on a set-screw, T, to open and close the end of the gutter B by means of a'tapis, W, secured to the end of the horizontal leg of the right-angled lever E. The object of this compound spring is to prevent thc type from escaping from the gutter till the stem is broken therefrom, and`secoud,.to act as an absorbent of the momentum acquired by the type in its descent down the gutter, and thus prevent all rebound in it, and tendency to displacement under the action of the hammer X. This hammer is secured to the lower side of springs Y, attached to the upper surface of the stock A by a set-screw, and iselevated by means of a stud, Z, on thel horizontal arm of the right-angled lever E, till the tapis M, onthe sliding plate H, comes under the end of the spring, to hold the hammer up while the type is being adjusted iu the gutter. f

Letter a2'is a propelling-sl1aft, and b2 is a cam-wheel attached thereto for operating the apparatus.

These parts properly form part of the mechanism ofa type-casting machine, to which the apparatus hereinbefore described will be attached, so as to receiveV the type as fast as cast, and break o` the jet or stem of metal adhering thereto, by a continuous consecutive operation.

` Having now described my invention, I willproeeed to'set forth what I claim, and desire to secure by Letters Patent-of the' United States.l -f

I. I claim, lin combination with the right-angled lever E, the plug D, substantially as described, and for Vthe purposesliereinbefore set forth.

2. ,I also claim the sliding adjusting-plate H and tapis M, in combination with. the right-angled lever E, substantially as described, and for the purposes hereinbefore set forth.

3. I also claim, in combination with the said sliding adjusting-plate, the bifurcated cam Q, substantially as hereinbefore described, and for the purposes set forth.

4. I also claim the combination of the movablejaw N ivith the inclined gutter B, substantially as hereinbefore described, and for the purposes set forth. i

5. I also claim the combination of the compound spring S, withthe inclined gutter B, for the purposes hercinbet'ore setv forth, and made` and operating substantially as described.

i 6. I also claim the combination of. the spring or trip-hammer X, with the inclined gutter and right-angled lever, ksubstantially as hereinbeforc described.

' DAVID BRUCE.

Witnesses B. IRVING, C. L. BAnnIrr. 

